scholarly journals Severe episodic memory impairment after strategic infarct: A case report

2017 ◽  
Vol 11 (4) ◽  
pp. 454-458 ◽  
Author(s):  
Francisco Wilson Nogueira Holanda Júnior ◽  
Katie Moraes de Almondes ◽  
Rodrigo Alencar e Silva

ABSTRACT. Brain infarcts located in strategic regions often result in cognitive impairment. Based on a case study, this paper describes unusual and specific clinical and neuropsychological features of a strategic ischemic lesion in the left medial temporal lobe (MTL) structures. Taken together with the literature data, the case illustrates that a unilateral strategic infarct in MTL structures may result in severe impairment of episodic memory (EM), which refers to the ability to encode and retrieve personal experiences, including information about the time and place of an event and detailed description of the event itself. The preservation of other cognitive functions, the severe functional impairment, and the type of visual-verbal deficit in a left-sided lesion were identified as singular features of the case. The current case supports the critical role of the MTL structures in EM formation.

2007 ◽  
Author(s):  
Paul S. Merritt ◽  
Adam Cobb ◽  
Luke Moissinac ◽  
Corpus Christi ◽  
Elliot Hirshman

2020 ◽  
Vol 26 ◽  
Author(s):  
Cristian Muresanu ◽  
Siva G. Somasundaram ◽  
Sergey V. Vissarionov ◽  
Liliya V. Gavryushova ◽  
Vladimir N. Nikolenko ◽  
...  

Background: From the evidence of failed injection-based growth factor therapies, it has been proposed that a naturally triggered uninterrupted blood circulation of the growth factors would be superior. Objective: We seek to stimulate discussions and more research about the possibility of using the already available growth factors found in the prostate gland and endometrium by starting a novel educable physiology, known as biological transformations controlled by the mind. Methods: We summarized the stretch-gated ion channel mechanism of the cell membrane, and offer several practical methods that can be applied by anyone, in order to stimulate and enhance the blood circulation of the growth factors from the seminal fluid to sites throughout the body. This details the practical application of our earlier published studies about biological transformations. Results: A previously reported single-patient case study has been extended, adding more from his personal experiences continually improving this novel physiological training and extending the ideas from our earlier findings in detail. Conclusion: The biological transformation findings demonstrate the need additional research to establish the benefits of these natural therapies to repair and rejuvenate tissues affected by various chronic diseases or aging processes.


2018 ◽  
Vol 95 (3) ◽  
pp. 2-20 ◽  
Author(s):  
Andrew Wiese

Place-based activism has played a critical role in the history of urban and environmental politics in California. This article explores the continuing significance of environmental place making to grassroots politics through a case study of Friends of Rose Canyon, an environmental group in San Diego. Based in the fast-growing University City neighborhood, Friends of Rose Canyon waged a long, successful campaign between 2002 and 2018 to prevent construction of a bridge in the Rose Canyon Open Space Park in their community. Using historical and participant observer methodologies, this study reveals how twenty-first-century California urbanites claimed and created meaningful local places and mobilized effective politics around them. It illuminates the critical role of individual activists; suggests practical, replicable strategies for community mobilization; and demonstrates the significant impact of local activism at the urban and metropolitan scales.


Author(s):  
Kyle D. Magnuson ◽  
W. Joseph Macicak ◽  
Otto C. Guedelhoefer ◽  
David M. VanDommelen
Keyword(s):  

2020 ◽  
Vol 42 (3) ◽  
pp. 317-328 ◽  
Author(s):  
Bruce Mutsvairo ◽  
Helge Rønning

The purpose of this issue of Media Culture and Society is to discuss the possible role of social media in the struggle for democracy, against authoritarianism, and over hidden power structures. The articles included in this volume are meant to offer empirical interventions to beliefs, some of them unproven, on whether the emergence of new media technologies has driven Africa towards democratic change. Papers in this Special Issue cover a wide variety of African countries delving deep into comparative studies of participatory citizens’ media on the continent. This introduction is an attempt to offer an explanation on African democratisation and authoritarianism before conceptualising the role of social media in political processes with the backing of current case study dispatches in Africa, demonstrating the dilemmas of digital disparities in promoting or denting democratisation in Africa.


1997 ◽  
Vol 9 (4) ◽  
pp. 512-521 ◽  
Author(s):  
Amanda Parker ◽  
David Gaffan

Six monkeys were trained preoperatively in an automated object-in-place memory task in which they learned 20 new scenes in each daily session. Three of the six monkeys then received stereotaxically guided bilateral mamillary body lesions, leaving the fornix intact, while the other three received a control operation. Postoperatively the control animals' rate of learning new scenes was unchanged, but the animals with mamillary body lesions showed a severe impairment, equal to that seen in previous experiments after fornix transection. All six animals were then given fornix transection, in addition to the existing mamillary or control operation. The control group now showed, after fornix transection, an impairment equal to that of the animals with mamillary body lesions alone. But the animals with mamillary body lesions did not show any additional impairment following fornix transection. We conclude that (1) the role of the mamillary bodies in a model of human episodic memory is as important as the role of the fornix, (2) the fornix and mamillary bodies form a single functional memory system, since the effect of lesions in both parts is no more severe than the effects of a lesion in one of the parts alone, and (3) the idea that the functional effects of fornix transection result from cholmergic deafferentation of the hippocampus receives no support from the present results; rather, they support the idea that in primates the fornix and mamillary bodies, together with connected structures, including the subiculum, mamillo-thalamic tract, anterior thalamic nuclei, and cingulate bundle, form a cortico-cortical association pathway for episodic memory.


2015 ◽  
Vol 19 (6) ◽  
pp. 1109-1123 ◽  
Author(s):  
John Israilidis ◽  
Evangelia Siachou ◽  
Louise Cooke ◽  
Russell Lock

Purpose – The purpose of this paper is to identify individual variables with an impact on knowledge sharing and explore the under-discussed construct of employees’ ignorance. This can enhance the knowledge-sharing process and facilitate the development of greater intellectual capital. Design/methodology/approach – Eighty-four dependent variables affecting knowledge sharing are analyzed and classified into 11 categories. In addition, the direct effect of employees’ ignorance on knowledge sharing is introduced and empirically investigated in a case study of a multinational organization operating within the aerospace and defense industry. Findings – The findings suggest that employees’ ignorance may negatively affect their intention to share knowledge, thus leading to poor decision-making and communication in organizations. Employees’ ignorance could also limit the organizational ability to repel external threats, implement innovation and manage future risks. Originality/value – A classification scheme based on different categories of employees’ ignorance is developed, providing tailor-made recommendations for practitioners facing different types of ill-informed organizational scenarios. Further, the need to shift the emphasis away from the management of knowledge to the management of ignorance is also an important contribution of this paper.


2013 ◽  
Vol 20 (3) ◽  
pp. 345-351 ◽  
Author(s):  
Cátia Panizzon Dal Curtivo ◽  
Nathália Bitencourt Funghi ◽  
Guilherme Diniz Tavares ◽  
Sávio Fujita Barbosa ◽  
Raimar Löbenberg ◽  
...  

2020 ◽  
Vol 40 (1) ◽  
pp. 49-63
Author(s):  
Shannon Hayes ◽  
Leslie Lindeman ◽  
Casey Lukszo

The purpose of this study is to understand the relationship between pre-transfer advising and the development of transfer student capital (TSC) for students who have transferred from community college to a four-year university. Using TSC as a framework, this qualitative case study seeks to identify the roles that pre-transfer advisors at community colleges and universities have in students' transfer processes. In this study, we find that advisors can play a critical role in building students' TSC and supporting students' self-efficacy. We also find that students indicate that advisors sometimes provide conflicting information or that advising can often be inaccessible to students, which can lead to self-advising. Implications and recommendations are discussed.


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